Wagon-jack



(No Model.)

W. I. SGHRYVER.

WAGON JACK.

No. 329,089. Patented Oct. 27, 1885.

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WASHINGTON I. SCHRYVER, OF PBOPHETSTOIVN, ILLINOIS.

WAGONJACK.

SPECIFICATION forming part of Letters Patent No. 329,089, dated October 27, 1885.

Application filed September 14, 1885. Serial No. 177,079. (No model.)

To all whom it may concern.-

Be it known that 1, WASHINGTON I. SonarvER, a citizen of the United States, residing at Prophetstown, in the county of Whiteside and State of Illinois, have invented a newand useful Improvement in Wagon-Jacks,of which the following is a specification, reference being had to the accompanying drawings.

be capable of adjustment to elevate the axle to any desired elevation with a minimum of power and exertion on the part of the attendant, which shall be very simple, strong, and durable in construction, thoroughly effective and easy in operation, and comparatively cheap of manufacture.

I have shown an embodiment of my invention in the accompanying drawings, in which- Figure l is a perspective view of my improved I lifting-jack. Fig. 2 is a side elevation of the operating-lever depressed and the axle -supporting dog elevated. Fig. 3 is a front elevation. Fig. 4 is a horizontal crossscction through the holding-dog on the line or w of Fig. 2.

Likeletters of reference indicate corresponding parts in all the figures of the drawings, referring to which, A designates my improved lifting-jack, comprising a base, B, astandard, O, secured upon the base, an operating-lever D, pivoted in the upper end of the standard, a rack-bar, E, pivotally connected to the opcrating-lever and thestandard, a holding dog F, mounted orsecuredupon the rackbar and free to slide thereon, and a bail, G, pivotally connected to the standard and adapted to engage one of a series of notches on the opcrating-lever, the peculiar construction and arrangement of the several parts of which I will now proceed to describe more fully.

The standard 0 comprises two parallel bars or uprights, G, which are bent outwardly from each other at their lower ends, as at c, and

bolted or otherwise suitably secured upon the base 13. A brace, 0, extends transversely across the plane of the lower ends of the standard, between the parallel bars of which it'is fitted, and is bolted thereto, as at c, and at their ends to the base, as it 0 1 The operating-lever D is preferably curved standard, to which is pivoted the rack-bar E,

which comprises two parallel bars, E, arranged on opposite sides of the lever and pivoted thereto, as described, by a cross-bolt, e. The lower ends of the parallel uprights of the rack-bar are pivoted, as at e, to a link or toggle lever, E, which inturn is pivoted, as at 6 between the parallel uprights of the standard (J, as clearly shown.

The supporting-dog F is provided with a shank, f, which passes between the parallel rack-bars, and at its rear end it is provided with laterally-projecting lugs f, which bear on the rear faces of the rack-bar. A tooth or projection, f extends below the body of the dog, and is adapted to engage one of the series of notches or teeth in the rack-bars. The dog is free to slide up and down on the rack-bars, the lateral lugs of the shank thereof bearing loosely against the rackbars, to permit the dog to be pulled outwardly,so that the tooth f thereof can be disengaged from the notch which it fits, and the dog be moved to the desired position on the rack bars, as will be verily understood.

The rear end of the link E has an eye, secured thereto or formed therewith, and to this eye g is pivotally connected the lower end of the bail G, the upper or front end of which passes over the operating-lever, and is adapted to engage one of aseries of notches, 61, therein to hold the lever from downward movement under the weight of the vehicle and axle, as is obvious.

From the foregoing description,taken in connection with the drawings, it will be observed LII that the holding-dog F can be adj ustedto any desired position on the rack-bars independently of the operating-lever, and in practice the device is placed in proper position beneath the axle of avehicle, the dog adjusted so that it will engage; or nearly so, the under face of the axle, and the outer end of the lever depressed, thus elevating the dog and rack-bars, and carrying with them the vehicle-axle. The bail G is then engaged with one of the notches in the lever to prevent the outer end thereof being elevated under the weight of the vehicle.

It will be observed that the device can be quickly and readily adjusted beneath and re- 1 5 moved from the vehicle-axle, that it requires but a minimum expenditure of power or exertion on the part of the attendant to operate the device, that it is very simple, strong, and durable in construction, and can be manufactured and sold comparatively cheap.

The front projecting end or arm,d ,of the lever and thelink E are of the samelength, and when the lever is operated they move in the same planes, thus keeping the rack-bars parallel with and at an equal distance at their upper and lower ends from the standard 0, and the supportingadj ust'able dog F, being arranged at a right angle to and projecting from the outer vertical face of said rack-bars, is consequently maintained at all times in a horizontal position, and to these particular arrangements of parts I attach especial importance.

Variousslight changes in the form and proportions of parts can be made without depart- 5 ing from the spirit of my invention.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

1. In a lifting-jack, the combination of a standard, a lever pivoted thereto, parallel o rack-bars pivoted to the lever, a link pivotally connected to the standard and the rackbars, a bail pivoted to the link and fitting over the lever, and a verticallyadjustable dog mounted on the rack-bars, substantially as described.

2. In alifting-jack, andin combination with the standard and operating lever thereof, rack-bars pivotally connectedto thelever and standard, and an adjustable dog mounted on the rack-bars and having a shank fitting between the same, and a tooth engaging one of a series of teeth thereof, substantially as described.

3. In alifting-jack, the combination of the 5 following elements, namely: abase, B, a standard, O, mounted thereon, braces 0 connected to the base and standard, alever, D, pivoted to the standard and having teethd, parallel rack bars E,pivoted to the lever, a link, E pivoted to the standard and the rack-bars, an. adj ustable dog, F, having a shank, f, provided with lateral lugs f, and a downwardly-projecting tooth, f anda bail, G, pivoted to an eye of the link E substantially as described. 5 In testimony that I claim the foregoing as" my own I have hereto affixed my signature in presence of two witnesses.

WASHINGTON I. SOHRYVER. Witnesses:

W. D. SMITH, M.V. SEELY. 

